Contactor for alarm and signal circuits



Feb. 5, 1935. 0. JACOBSON CONTACTOR FOR ALARM AND SIGNAL CIRCUITS I Filed May 24, 1928 Patented Feb. 5, 1935 1 I v I I v UNITED STATES PATENT; OFFICE jj CONTAGTOR FOR ALARM AND SIGNAL H CIRCUITS v I n Ole A; Jacobson; Grand'Rapids,-.Mich., 'assignor, by inesne assignments, to AmericanDi'strict Telegraph Company, Jersey City; N. J., a corrotation of New Jersey I I Application May 24,1928, Serial no.280,235

. 13 Claims; I(C .-i7'7 -3-14) This invention relates to'contacting or control tion of the key 9 from the outer or opposite side means for alarm and signal circuits, and is more of thedoor. especially intended for} use inbank protection The lock bolt 10 is slidablymounted the systems, as shown in my co-pending application; housing I to project from one side thereof ior en- Serial No. 53,768, filed August 31, 1925. gaging'the door latch or keeper, notshown. The 5 The mainobjects of this invention are to probolt is retained in position by the scr'e'w 11' which vide hidden alarm' sounding and lock-operating projectsthrough the slot 12: formed'in the means which will be inadvertently operated by portion of thebolt and threads into the not; some act of the robber, or by some act ordered m Wa Of the Casing eb t 0 s $9511? 10 by the robber in attempting to'gain admission to iently D outwardly b means of the' Spring 10 4 the tellers cage or like prohibitive'areas, so that 13 which is housed in a hollow portion of: the the bank operators will not have to make any bolt as L- n bears against t p moves which might appea suspicious to therobor stem of said screw 11. v i F ber. The bolt 10 is. notched on the lower side within 1 "The door to the tellers cage and the area the housing to provide the shou1dersl4 and '15, 15

around the-vault is usually providedwith a w h a e n d respe tivel by th bar 6 sprin lock which: i operated by a handle from which is connected to the handle 6, and the earn the inside of the cage or area, and which is opfi ger 1'? which is attached to the inner end of erated by means of a key'from th out ide T the tumbler .7 for withdrawing the bolt intothe gain admission, the robber usually orders somehousingltoiilhlock the one inside the cage to open the door, or orders The Shank 0f the handle 6 is r d the person known t ha th key to give it up is slotted transversely at theinner end asis more or to use the key to unlock the door'from the clearly shcwn at in a A short Y'I outside. i I r fits. slidably at18 .in the hollow "shank-18 and i In this invention, a spring lock is provid'ed a es in an angular" projecting trigger having a switch and selective means soarranged which is accessible, s y & finger 0 t ehahd that; by persons cognizant ofthe hidden means, n operator, throu a sui ble recess 20 pmthe lock-may be operated by the handle or the Vided 0n t e inner-"side of the hand-1e 6, An key in the ordinary course of business witho t tension 20a oi'this' recess communicates. with causing an alarm, but which may be operated in therbore Therrod 19 te through t holwhat is apparently the usual and correct manin the center of w Seen in f nor by said persons so as to cause the alarm. I and the b is retained 0n d y m An illustrative embodiment of this invention of-the 100k s 21 wh c a e th eaded on the is shown in the accompanying drawing; in inner endof the ;.rod; Thebar is slidably en gaged-inthe slot '16' and is'pressed inwardly to- 3-55 Figure 1 is a view of the interior of the door- Wards the end of" the shank, bymeans of the lock, the cover being removed-and partsw spring 22 which seats in an enlargement ofiithe" in section together with adiagrammatic repree 18 on ashou er' ei hank and sentation of an alarm and signal circuit n." pressesagainst the bar. Thus the baris normally. nectedtothe lock. a I

Fig.2 is a cross section or thejlock taken n; ma drawn s q e g wa of hem the line an of Fig, 1. Q s y ssmg on rigger p a I i r 1 The end of the bar 16 whichis-relatedwith g 3r 95 w the me 3 0f the shoulder 14 of the bolt lo isof-suflicient Referring to thedrawing, the lock casing, or housing 1,is provided withjcover2 which is removably secured tothe casing by means of the screws 3' in the usual. manner. The lock is mountedin the door 4, as indicated by dotted hues W handle W Q 15 depressed and held while the handle isturned; tataPIY fd 1n the -Lp l 3 which'latter is the proper manner of operating" the inner-rude of the door, and the lock tumbler t lock; that is t say by thus; who are w shoulder is engaged by thebar in both the ex, tended and the retracted positions. Therebyimotion is communicated from the handle 6 to'fwith draw the bolt whether. the handle is merely- '7, whichfis rotatably mountedzin the hub 8 of the presence of the hidden trigger.

t v held in positionnear the endof thefshank, but; 40 t width, as shown in Fig. 2, to ensure that the 45 grasped and turned, or whether the trigger is. 60

f rm on h cover 2, accessible for the inser .The opposite or lower end of: the bar 1615 6;?

saidend passes freely under said shoulder por-f 6 tion when trigger is depressed, as becomes clearly evident won an inspection of Figs. 1 and 2. The

signal operating bolt 24 is slidably mounted in' the casing 1, and'is guided and retainediri position by the pin 25, and bythe cap screw 26.... '10 which arefixed in the casing and engaged in' Y suitable slots formed in the saidiisignalih 1h See :side'only, and means whereby the bolt is con- Fig. 1. I s The bolt 24 is pressed rearwardly byineans of the spring 28 which is' housed in the, bolt and bears against the pin 25.1 ."Ihebolt-24' is also signal is not thrown off.

provided with a spring pressed det'entball29' which rides on a shouldered surface 30 of the housing 1, so that cognizant persons are apprised ewh n th by the turning resistanceof the -When the signalbolt 24 is moved, it makes contact through the medium of a shoulder thereon,yas shown in Fig. 1, with ajswitch finger 31,

i which is mounted on an insulating block 32, and 2s this'block is secured to the sidewall of housing 1 and connected to'one side 33 of the signal and alarm circuit; the opposite side 34 of which .is grounded orconnected to the metal of the casing 1. -"Ihis1circuit may include any suitable 30,; translating means such as the alarm A. v

projections at one or unusual motions.

- 7963 a V l r independently of the switch while the switch is A second'finger 35 is joined to the finger 31, andterminates opposite the inner end of the lock tumbler 7. See Fig. 3. .The key 9, for operating the tumbler 7 is provided with a projection 36 I at one side of the inner end, which strikes against the surface of the cam 17 when the key is inserted;

inthe position shown in Fig. 3. In this position thetumbler can be turnedto rotate the cam for. key is prevented' 40 from contacting with the finger 35. Itis there withdrawing the bolt, but the fore only necessary for anauthorized or informedxperson to keep the projection 36 upper-. most, and this position is further seen to be correct when the inner notch 9afof the keycisat'the; end of the hub 8. In the reverse position of the key, when the notch 9'. is at the end ofsaid hub,

the end 36 passes through a slot 39 in the earn 17; and makes contact with'the finger 35., Keys.

have-heretofore been provided with notches or both sides, and since it is usual to insert all of these notches in the hub, it

follows that an unknowing person may do likewise in this case. But when the notch'9. is in sertedthe projection 36'engages the contact 35 55,: to close the circuit" and sound the alarm A." x In operation, cognizant persons may operate the look from either side of the door by holding-- the trigger 20, depressed whileturning the handle: '6,or by inSerting-thekey-Q with the projectionf 36 at the upper side." Incase they are command ed by" the robber to operate the door, they can grasp the handle in the ordinary manner and open the do o'r andat the same time energize the. making any suspicious or signal circuit without If the person is on the outside It 'maylbe' seen that the lock may be operated dependent for operation upon the manner of inserting the key or, if desired, upon the construction of the key. For example,- separate keys may beprovided,- oneof which is suitable for operating only the lock and another suitable for operating both the lock and the switch.

While but one specific embodiment of; this invention has'been herein shown and described, it

will be understood that details oi the construction shown may be altered or omitted without departing from the spirit of this invention asdefined by the following claims. .I claim; I t

,1; In combination,a lock having a bolt, a. handle on one side only, and a key j'hole on the other ating position; an alarm means operated by nor-. -mal operationof the handle for unlocking the bolt, and by said key when in said reverse posi-' tion; means'including a manual trigger .on the handle for preventing v operation of the alarm means by the handle duringnormal handle-operation of the bolt, and means preventing operation of the alarm means by operation; of ,the :key.

the key during normal 2. Incombination, a lock having a boltfahan dle on one side only, and a key holeon the other side only, and means whereby the bolt is .normally controlled by saidhandle and by a key inserted in said hole in normal lock-controlling position; said key holealso receiving the key in a reverse lock-controlling position simulating normaloperation position ;an alarm means opera ated by normal operation of the handle for unlocking the;, bolt, and by said key when'in-g said reverse position; andmeans including a trigger onthe handle for selectively preventing operation of the alarm means by the handle during handle-operation of the bolt.

3. In combination, a lock having a bolt, a handle on key hole on the other side only, selectively oper-,

able alarm means, and means whereby the bolt, is controlled by said handle or by said key whenv one side only, a reversible key anda operable when the key is inserted in the. reverse I position for operatingsaid-alarm;

4. In combination, a lock having a bolt, a selece y abl arminc ud ne circuit a a switch, a handle on one side of the lock for operating the bolt, a reversible key, a lock cylinder on the opposite side of said lock for receiving-said key in one of two operating positions, said key in one of "said positions forming part of said cirvc uit, and means. on said handle for preventing contact with said switch when said handle is operated to operate said bolt. I 5. In combination, a lock comprising a casing -of.,conductive material including .a bolt, and, a

handle, said handle havingitherein a recess; an

insulated conductor in said 'casing; a switch member cooperating with said casing adjacent said;conductor; means carried by said, handle within said casing and movable between two po sitions relative to said handle for operating said bolt, said means when in one of said positions being adapted to move said switch member to said conductor, and manipulable means rigid with the first mentioned means and disposed in said recess-whereby to selectively move the firstmen tioned means into the other position for operating said bolt independently of said switchmember. V

6. In combination a lock having a key and means for guiding the key into the lock in two difierent positions on the same side of the lock; means on the key for unlocking the lock in both of said positions; a signal means; and means on the key for operating the signal means when the key is in one of said positions only.

7. In combination, a lock having guide means for guiding a key therein; a key guided in the look by said guide means in either of two positions of the key and having a terminal projection at the inner end of one side edge; means actuated by said guide means for operating the lock; an'electrically conductive contact member engageable by said projection when said key is inserted in one of said positions; and means engaging said projection when the key is guided in the other position and holding the key out of contact with the contact member. I

8. In combination, a lock casing to whicha conductor may be connected; a bolt slidable therein; an elongated rotary tumbler grounded on the casing and rotatably mounted in the casing and having a groove in one side extending through both ends; a cam finger secured around the inner end of the tumbler and engageable with the bolt to retract the bolt; an electrically conductive insulated contact member, to which a conductor may be connected, positioned near and opposite the inner end of the groove; and a key slidable in said groove and having at the inner end of one side a terminal projection engageable with the finger when said sideis uppermost in the groove to hold the key from the contact, and constructed and arranged to project irom'the end of the groove and engage saidoontact member when said side is at the bottom of the groove.

9. In combination, a lock of conductive material having guide means for guiding a key therein; a key guided in the look by said guide means in either of two positions of the key and having a terminal projection at the innerend of'one side edge; means actuated by. said key for operating the lock; an electrically conductive insulated contact member engageable by said projection when said key is inserted in one of saidpositions; means engaging said projection when the key is guided in the other position and holding the key out of contact with the contactmember; and a signal circuit electrically connected to and between said lock and contact.

10. In combination, a lockcasing; abolt slidable therein; an elongated rotary tumbler r0- tatably mounted and groundedin the casing and having a groove in one side extending through both ends; a cam finger secured around the inner end of the tumbler and engageable with the bolt to retract the bolt; an electrically conductive insulated contact member positioned near and opposite the inner end of the groove; a key slidable in said groove and having at the inner end of one. side a terminal projectionengageable with the finger when said side is uppermost in the groove, and adapted to project from the end of the groove and engage said'j contact member when said side is at the bottom of the groove; and a signal circuit electrically connected to and between the casing and said contact.

11. In combination, a lock having a key and means for guiding the key into the lock. in two different positions on the same side of the lock;

cooperating means on the key and in the' lock for unlocking the lock in both of said positions;

a signal means; operating means for operating the signal means; and means on the key for operating the operating means, when in a certain one of said positions to cause the operating means to operate the signal means only when the key is in one of said positions; said.- means on the key being constructed to leave the operating means inoperative when the key is in the other of said positions. I

12. In combination, a lock having a key and guide means for guiding'the key into the lockin two different positions on the same side of the look the key being so constructed that it may be guided by the guide means in said two positions;

cooperating means on the key and in the lock for unlocking the lock in both of said positions; a'

signal means; operating means for operating the signal means; and means on the key for operating the operating means in one of said positions only to cause the operating means. to operate the signalmeans, when the key isin one of said positions only.

13. In combination, a lock having a key and means for guiding the key into the lock in two different positions on thesame side of the lock, the key being so constructed that it may be guided by said guide means when the key is in certain of said two positions, cooperating. means on the key and in the lock for unlocking the look when the key is in either of said positions; an

operating means; a translating means operable means to operate the translating means when the key is in one of said positions only.

OLE A. .JACOIBSON;v 

